No power to rear wheels on a 98 Forester w/ auto trans.It runs and drives fine without any noise, shifts through all gears smoothly but will not distribute any power to the rear wheels. Anyone know?

Just looked up the 1998 Legacy, and the all wheel drive is a constant drive system, so if you don't have any drive to the rear, there is no electrical switches or solenoids to turn the rear drive on or off the system is all mechanical, so you need to take a good look at the drive shaft going to the rear wheels, Jack the car up all 4 wheels and install jack stands under all four lower a-frames then have some one start the car and put the trans. in gear and watch the rear drive shaft to see if it is turning, if it is not you will have to have the trans-axle checked out for a bad rear drive gear, if the drive shaft is turning but the rear wheels are not you will have to have the rear differential checked for a broken ring or pinion gear, but what you may find is that the drive shaft may have a broken u-joint and that you can fix yourself, pay very close attention to were the drive shaft attaches to the trans-axle and the differential.......i hope this helps let me know if there is any thing i can help you further with.